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DPJ's Silver Leon Cupra GT - no more.

DPJ

...........
Dec 13, 2004
7,996
2
NN Yorks / Salento
www.seatcupra.net
RR Disappointment at Awesome.

RR at Awesome.

I'd logged the car after fitting a larger WMI nozzle (235cc/min - should be correct for my power) and advanced the timing by 10.5 degrees. All good.

However, on the way down, I got a couple of misfires at full power. Vag-Com showed a multiple misfire code.

The first two runs on the rollers showed something was amiss - the car sounded like it was missing - so I pulled it. Again - multiple missfire code. I was going to change the nozzle back to the original 175cc one - but I found that I'd brought the wrong accessories box. :rolleyes: I knocked the timing back to 8.25 degrees and the car was run again later. The only difference was the later two runs gave less power. No fault codes though.

P1000970.jpg


Here's my previous Awesome graph:
P1010008.jpg


I'll post the pre RR logs later - they don't show anything.

I took the timing back to 0 for the drive home and disconnected the wmi. No signs of problems or fault codes from the 110m thrash.

Too much methanol?
 
Last edited:

DPJ

...........
Dec 13, 2004
7,996
2
NN Yorks / Salento
www.seatcupra.net
Logs before RR day.
9 degrees of advance.

Code:
Thursday	25	June	2009	21:01:05			
06A 906 032 HN		1.8L R4/5VT      01 0002					
							
	Group A:	'003			Group B:	'020	
Idle speed	Air mass in	Throt Angle	Ignit Angle	Idle Stabilization			
 /min	 g/s	%	 °BTDC	 CF	 CF	 CF	 CF
3200	65.72	100	24	0	0	0	0
3360	75.97	100	38.3	0	0	0	0
3560	90.53	100	24	0	0	0	0
3760	102.11	100	33.8	0	0	0	0
4040	122.61	100	15.8	0	0	0	0
4320	158.39	100	11.3	0	0	0	0
4560	175.22	100	12.8	0	0	0	0
4840	184.56	100	13.5	0	0	0	0
5080	190.47	100	17.3	0	0	0	0
5400	203.06	100	12.8	0	0	0	0
5640	216.56	100	16.5	0	0	0	0
5880	215.22	100	24	0	0	0	0
6120	219.36	100	17.3	0	0	0	0
6360	222.36	100	26.3	0	0	0	0
6520	231.78	100	27.8	0	0	0	0
6720	228.61	100	28.5	0	0	0	0
6960	228.17	100	20.3	0	0	0	0
7080	221.44	99.6	29.3	0	0	0	0
7120	232.69	99.2	30	0	0	0	0

Code:
Thursday	25	June	2009	21:13:45	
06A 906 032 HN		1.8L R4/5VT      01 0002			
					
'115				'031	
Engine Speed	Engine Load	Spec. Boost	Actual Boost	Lambda Factor	
					
 /min	%	 mbar	 mbar		
3240	100	1550	1340	0.891	0.899
3360	110.5	1460	1440	0.852	0.836
3520	124.1	1420	1600	0.813	0.821
3640	136.1	2280	1830	0.805	0.821
3840	139.8	2350	1840	0.797	0.821
4080	152.6	2410	2030	0.805	0.805
4360	174.4	2450	2300	0.797	0.805
4600	190.2	2430	2510	0.813	0.805
4880	191.7	2390	2500	0.789	0.805
5200	191.7	2370	2500	0.797	0.805
5400	191	2380	2520	0.789	0.805
5680	189.5	2380	2490	0.797	0.805
5880	191	2380	2510	0.789	0.805
6120	185	2390	2490	0.797	0.805
6240	181.2	2400	2500	0.789	0.805
6400	180.5	2370	2520	0.805	0.805
6560	176.7	2340	2510	0.782	0.805
6760	173.7	2310	2470	0.789	0.805
6880	168.4	2280	2490	0.789	0.805
7040	162.4	2260	2500	0.75	0.805
7120	164.7	2270	2460	0.891	0.836

Code:
Thursday	25	June	2009	21:17:55								
06A 906 032 HN		1.8L R4/5VT      01 0002										

'118				'032								
Engine Speed	Air Temp In	Boost Dut Cyc	Actual Boost	Idle O2 Adapt	Run O2 Adapt							
700-6800 RPM	<=110 C	0-100% 	<=1800 mbar	-10.1	-10.1							
 /min	°C	%	 mbar	%	%							
2840	24	0	1030	0.4	0.8							
3400	21	0	1190	0.4	0.8							
3480	21	100	1280	0.4	0.8							
3680	21	100	1550	0.4	0.8							
3880	20	100	1760	0.4	0.8							
4160	17	100	2030	0.4	0.8							
4480	17	80.8	2380	0.4	0.8							
4760	18	68.2	2530	0.4	0.8							
5080	18	52.5	2510	0.4	0.8							
5320	20	40.8	2510	0.4	0.8										
5640	21	19.2	2540	0.4	0.8										
5880	21	0	2540	0.4	0.8										
6160	21	0	2520	0.4	0.8										
6360	23	0	2500	0.4	0.8										
6560	23	0	2490	0.4	0.8										
6760	24	0	2530	0.4	0.8										
6880	24	0	2490	0.4	0.8										
7040	24	0	2490	0.4	0.8										
7160	24	0	2380	0.4	0.8										
7120	24	0	2540	0.4	0.8

10.5 degrees advance
Code:
Friday	26	June	2009	19:59:31								
06A 906 032 HN		1.8L R4/5VT      01 0002										

'003				'020								
Idle speed	Air mass in	Throt Angle	Ignit Angle	Idle Stabilization								
												
 /min	 g/s	%	 °BTDC	 CF	 CF	 CF	 CF					
3560	61.81	33.3	26.3	0	0	0	3					
3640	56.33	25.1	26.3	0	0	0	3					
3720	63.44	27.8	26.3	0	0	3	3					
3880	99.42	100	35.3	0	0	3	2.3					
4080	117.81	100	31.5	0	0	3	2.3					
4360	139.78	100	26.3	0	0	3	2.3					
4600	170.61	100	14.3	0	0	3	2.3					
4920	179.36	100	23.3	0	0	2.3	1.5					
5240	188.31	100	13.5	0	0	1.5	0.8					
5480	200.94	100	18	0	0	1.5	0.8					
5680	209.44	100	24	0	0	1.5	0.8					
5960	214.86	100	25.5	0	0	1.5	0.8					
6160	223.22	100	18	0	0	0.8	0.8					
6320	220.42	100	27.8	0	0	0.8	0					
6480	228.17	100	18.8	0	0	0.8	0					
6600	229.69	99.6	29.3	0	0	0.8	0					
6760	225.36	98	29.3	0	0	0.8	0					
6960	222.36	100	19.5	0	0	0.8	0					
7080	219.69	100	19.5	0	0	0.8	0					
7120	220.44	98.8	29.3	0	0	0.8	0
 

DPJ

...........
Dec 13, 2004
7,996
2
NN Yorks / Salento
www.seatcupra.net
.............
Is it possible it was just freaking out on the rollers due to high ambient temps / not enough cooling?

The water methanol does the cooling biz on the rollers ( big advantage over other cars really), Mark.

At the Northallerton RR day, the guy did 5 or 6 runs in fairly quick succession and the car was virtually the same every time. (As Wilko says, transmission losses lessen due to gearbox oil heatiing....)
 

DPJ

...........
Dec 13, 2004
7,996
2
NN Yorks / Salento
www.seatcupra.net
Regapped plugs? Weird timing tho isnt it?

:yes:

Awesome had trouble with the speed sensors for the dyno on several cars (not mine) due to static. This would be because of the high humidity. 40% at nearly 30 degrees. This can obviously cause shorting. I'm just wondering if its enough to cause a sensor short - or that the additional moisture in the air on top of my methanol mix was just too much..... :shrug:

Still need to log it with less methanol to see what's what.
 

Skorchio

600 Miles to a tank :)
Jan 23, 2007
1,570
1
Nr Milton Keynes
Its a worry dave as im running a 175cc and you have alot more power. I remember John saying WMI should be 15% of the fuel thats injected. Have you worked out what this figure is for you Dave? I worked mine out to be needing a 210 CC nozzel.

Isnt your airflow very low?:confused:
 
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